Attachment for incandescent-lamp sockets.



H. H. HAM. ATTACHMENT FOB. INGANDESGENT LAMP SOCKETS. APPLICATION FILED MAY 12, 1906. RENEWED MAR. 19, 1908.

904,476. Patented Nov. 17, 1908.

2 SHEETSSHEET 1.

/l 1 i i Z d wr z 2 H. H. HAM. ATTACHMENT FOR INGANDESGENT LAMP SOCKETS. APPLICATION FILED MAY 12, 1906. RENEWED MAR. 19, 190B.

2 SHEETSBHEBT 2 Patented Nov. 17, 1908.

UNITED STATES ATEN T UFFICE.

HENRY H. HAM, OF SHREWSBURY, MASSACHUSETTS, ASSIGNOR OF ON E-HALF TO EDWIN W. HAM, OF WORCESTER, MASSACHUSETTS.

ATTACHMENT FOR INCANDESCENT-LAMP SOCKETS.

Specification of Letters Patent.

Patented Nov. 17, 1908.

Application filed May 12, 1906, Serial No. 316,483. Renewed March 19, 1908. Serial No. 422,086.

To all whom it may concern:

Be it known that I, HENRY I-I. HAM, a citizen of the United States, residing at Shrewsbury, in the county of WVorcester and State of Massachusetts, have invented a new and useful Attachment for Incandescent-Lamp Sockets, of which the following is a specification.

A most convenient manner for operating electric lamps to light and extinguish them has been provided by a certain invention which involves the use of a flexible switchoperating connection adapted to turn the current on and off alternately as the flexible member is pulled. This device has been objectionable when used on those lamps which extend downwardly and are provided with shades, globes or the like, for the reason that the flexible member, which usually is in the form of a chain or other metallic body, hangs down the side of the shade or globe and increases its liability of breakage. For the purpose of overcoming this objection and improving electric lamp sockets of this character, I have provided means whereby the flexible member is prevented from engaging the surface of the shade or globe in all positions of the same.

Reference is to be had to the accompanying drawings in which,

Figure 1 represents a side elevation partly in section of a socket provided with one form of my invention. Fig. 2 is a plan of a shade-holding member shown in Fig. 1. Fig. 8 is a view similar to Fig. 1 showing another form in which my invention may be used. Fig. 4. is a plan of the shade-holding element shown in Fig. 3. Fig. 5 is a plan of the spring employed for holding the shade-holding element. Fig. 6 is a perspec tive View of a spring cli employed on this form of lamp, and Fig. T is a side elevation of another form of my invention.

In the form shown in Figs. 1 and 2, a lamp socket a of the description mentioned above is provided with a flexible member I) which may be in the form of a chain or otherwise. This flexible member would normally depend from the opening in the socket through which it extends, in contact with a shade or globe held by a shade-holder 0 connected with the socket. For the purpose of avoiding this I have prepared the following construction: The shade-holder is provided with the usual or any ordinary means for holding the shade and it is provided with a split collar 0 having outwardly projecting lugs through which passes a screw (Z. This screw is adapted to adjust the collar so it will fit the neck of the socket and hold the shade-holder in fixed position. On the shade-holder I have movably mounted an arm 0. In the present form, this arm is pivoted on an extension of the screw d so it will turn about the center of the screw as an axis. This arm has a notch e for receiving a part of the chain or, in the present i11- stance, one of the balls of the flexible member Z). As this fixes the position of the end of the arm with respect to the flexible member, it will be seen that the manipulation of the latter for the ordinary purpose will turn the arm about its pivot and change the position of the arm with respect to the shadeholder but that the arm is sufliciently long so that the depending portion of the flexible member will be kept away from the surface of the shade in all positions of the arm.

In the form shown in Figs. 3, 4t, 5 and 6, the socket a and flexible connection Z) are of the same construction as above but, of course, any ordinary construction may be employed. In this case, the shade-holder c is in the form of a substantially conical sheet metal structure connected with the neck of the socket by a grooved split collar 0 This holder is in turn connected with the shade by means of a wire 7". This wire is located in a circumferential groove 0 of the shade-holder and it is provided with loops f adapted to pass through slots or openings 0 in the shade-holder to secure the shade in an obvious manner with respect to the holder. The holder is provided with a bracket 0 upon which an arm 6 shown in the present instance as in the form of a pair of wires twisted together, is pivotally mounted. This arm is provided with two inwardly projecting ends engaging in eyes in the two parts of the bracket 0. The outer end of the arm is as before, provided with a notch for receiving the flexible connection and it projects in the same way as before.

In Fig. 7 the movable arm 6 is in the form of a spring acting in a manner similar to that described above but its own resiliency assisting in raising the flexible connection 6.

While I have illustrated and described certain forms in which my invention may be embodied, it will of course be understood that the same is not limited to these particular forms, as many modifications may be made therein by any person skilled in the art, Without exceeding the scope of my invention as set forth in the claims.

Having thus fully described my invention, What I claim and desire to secure by Letters- Patent is 1. The combination with an incandescent lamp socket having a flexible member for turning the current on or ofi, of means for mounting a shade, or the like, on the socket, and means connected with said mounting means for keeping the flexible member out of contact with the shade.

2. The combination with a lamp socket having a flexible switch-operating member, of a shade, or the like, and means for keeping the depending portion of the flexible :0 member out of contact with the shade.

3. The combination with an incandescent lamp socket having a flexible switch-operating member, of a movable arm connected with the flexible member at a distance from the socket to hold the depending member of the flexible connection away from the socket.

4. As an article of manufacture, a lamp socket having a flexible switch operating member, and a pivoted arm for holding the flexible member away from the socket.

5. As an article of manufacture, a lamp socket having a flexible switch operating member, a shade-holder, and an arm pivoted to the shade-holder at one end and to the flexible member at the other.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

HENRY H. HAM. Witnesses:

ALBERT E. FAY, EDWIN W. HAM. 

